Finding the Fourth Proportional to 378,061.38, 567,149.58 and 128,685.06

Step by Step Solution

1. Step 1: Write the proportion equation
   378,061.38 : 567,149.58 = 128,685.06 : x
2. Step 2: Convert to fraction form
   378,061.38/567,149.58 = 128,685.06/x
3. Step 3: Cross multiply
   378,061.38x = 567,149.58 × 128,685.06
4. Step 4: Simplify right side
   378,061.38x = 72,983,677,731.27
5. Step 5: Solve for x
   x = 72,983,677,731.27/378,061.38
6. Step 6: Final answer
   x = 193,047.17